Mandarin:
发泡剂

Explanation in English Language (EN):
A substance that generates gas during processing to create a cellular structure in plastics or rubbers, used in foams and insulation materials.

Explanation in Mandarin (ZH):
在加工过程中释放气体以在塑料或橡胶中形成多孔结构的物质，用于泡沫和保温材料中。

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International Phonetic Alphabet (IPA)
- Definition: A standardized system of symbols used to represent the sounds of spoken language.
- Purpose: Helps linguists, language learners, and educators accurately describe pronunciation across languages.
- Example: The word “hello” in British English is transcribed as /həˈləʊ/ in IPA.